Variable-Frequency Acoustic Pest Control in Air Conditioners
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Solution Overview
Problem
Air conditioners operating in high temperature and humidity environments, conducive to insect pest habitats, lack effective methods for efficiently exterminating insects like mosquitoes and flies, and existing solutions are complex and inefficient.
Innovation Solution
An air conditioner equipped with an insect-pest exterminating device that outputs a sequence of sound wave signals with varying frequencies, using a controller, amplifier, and output unit to efficiently repel insects by converting pulse signals into sound waves, eliminating their tolerance to these signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single frequency sound wave signal is used for insect pest extermination, then the device structure is simple, but insect pests develop tolerance to the signal
Solution Approach 1:
The patent implements dynamic frequency switching by sequentially outputting multiple sound wave signals with different frequencies (first through fifth signals) instead of using a fixed single frequency. This dynamic approach prevents insect pests from developing tolerance to a constant frequency signal, thereby maintaining extermination effectiveness while using a relatively simple device structure.
Solution Approach 2:
The patent employs periodic action by sequentially outputting multiple sound wave signals in a repeating cycle. The controller outputs the first, second, third, fourth, and fifth sound wave signals in sequence, creating a periodic pattern that continuously varies the frequency exposure for insect pests, preventing them from adapting to a single frequency while maintaining system simplicity.
2Productivity
If multiple sound wave signals with different frequencies are output simultaneously, then extermination efficiency is improved, but device complexity increases
Solution Approach 1:
The patent achieves improved extermination efficiency through periodic action by sequentially outputting multiple sound wave signals with different frequencies in a repeating cycle. This sequential periodic output provides the benefits of multiple frequencies for enhanced extermination effectiveness while avoiding the complexity of simultaneous multi-frequency generation, as only one frequency is active at any given moment.
Solution Approach 2:
The patent uses dynamic frequency switching to achieve high extermination efficiency. The controller dynamically switches between different frequencies (first through fifth signals) in sequence, providing the extermination benefits of multiple frequencies without requiring complex simultaneous multi-frequency generation hardware. The dynamic switching approach maintains productivity while controlling device complexity.
3Reliability
If high frequency sound wave signals are continuously output, then extermination effectiveness is maintained, but heat generation in the device increases
Solution Approach 1:
The patent addresses heat generation issues through periodic action by sequentially outputting multiple sound wave signals with different frequencies rather than continuously outputting high-frequency signals. This periodic variation in frequency output allows the device to maintain extermination effectiveness while reducing continuous thermal load on the speaker and other components.
Solution Approach 2:
The patent applies parameter changes by varying the frequency parameter of the sound wave signals in sequence. Instead of maintaining a constant high frequency that generates excessive heat, the system changes the frequency parameter between the first through fifth signals, thereby maintaining extermination effectiveness while reducing thermal accumulation in the device components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The air conditioner effectively exterminates insect pests by sequentially outputting sound waves of different frequencies, improving extermination efficiency and ease of implementation, while allowing for flexible frequency adjustments.
Implementation Method 1
an output unit for converting the pulses signals whose level is amplified into a plurality of sound wave signals and outputting the same
Data Source
Figure 1~2
Figure 3
Figure 4(a)~4(b)
AI summary
An air conditioner includes: an indoor unit main body having an air inlet for drawing room air and an air outlet for discharging conditioned air; and an insect-pest exterminating device attached to the indoor unit main body, and for exterminating insect pests, the insect-pest exterminating device: including an insect-pest exterminating device controller for outputting a plurality of pulse signals; an amplifier for amplifying the level of the pulse signals; and an output unit for converting the pulses signals whose level is amplified into a plurality of sound wave signals and outputting the same. Accordingly, insect-pests can be efficiently exterminated.